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ivann1987 [24]
3 years ago
14

When 5 is added to 2 times a number, the result is 45. find the number.

Mathematics
1 answer:
WINSTONCH [101]3 years ago
3 0
A.

let the number be n.
2n+5=45
2n=40
n=20
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Please solve these questions for me. i am having a difficult time understanding.
s2008m [1.1K]

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1) AD=BC(corresponding parts of congruent triangles)

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Step-by-step explanation:

1)

Given : AD||BC

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In ΔAED and ΔBEC

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\angle AED = \angel BEC ( Vertically opposite angles)

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2)

Refer the attached figure

\angle ABC = 90^{\circ}

In ΔDBC

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